Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N6643U.
| Tail Number / N-Number | N6643U |
| Manufacturer | MOONEY |
| Model | M20D |
| Manufacturer's Serial Number | 138 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 4 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 127 miles per hour |
| Type of Registrant | Individual |
| Owner Name | MAYFIELD DUANE E |
| Street | 510 NORTH MADISON |
| City | MASON CITY |
| State | IA |
| Zip Code | 50401 |
| Region | Central |
| Certificate Issue Date | 1973-07-14 |
| Last Status | Valid Registration |
| Cancellation Date | 1976-05-26 |
| Mode S Code | 52142751 |
| Mode S Code Hex | A8C5E9 |